Has anyone converted their main to slugs instead of the bolt rope? If so, has it worked well?

Also, can anyone say why this would be a bad idea? I'm sure there is a "performance" hit, but I can't imagine its enough to make a difference.

For cruising, it just seems to make sense to have slugs. Much easier when short handed. But I also race...so there is the dilemma.

Any suggestions or comments?

Thanks.